staging

Full Definition

Staging is the systematic process of determining the size, location, and extent of cancer spread in a patient's body. This comprehensive assessment typically involves physical examination, imaging studies, laboratory tests, and sometimes surgical exploration or biopsy. The most widely used staging system is the TNM system (Tumor, Node, Metastasis), which evaluates the primary tumor size, lymph node involvement, and presence of distant metastases. Accurate staging is crucial for prognosis determination, treatment planning, and clinical trial enrollment.

Usage

Usage note: Often confused with grading, which assesses how abnormal cancer cells look under microscope.

In Context

• "Complete staging workup revealed T2N1M0 disease." — Pathology report
• "Restaging after neoadjuvant therapy showed excellent response." — Multidisciplinary team note